Carrier RTU Open v3 - Installing the RTU Open; Field-supplied hardware

Installing the RTU Open
RTU Open v3 CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
5
To install the RTU Open:
1 Mount the controller (page 6).
2 Wire the controller for power (page 7).
○ To use the rooftop equipment control power transformer (page 8).
○ To use an auxiliary control power transformer (page 9).
3 Set the controller's address (page 11).
4 Set the protocol and baud rate (page 11).
5 Wire to the BACnet MS/TP or BACnet ARC156 network (page 12, page 12).
6 Wire inputs and outputs (page 13).
7 Wire sensors to the controller (page 20).
Field-supplied hardware
An RTU Open retrofit installation may require the following field-supplied components:
• wiring harness: Part #OPN-RTUHRN
• transformer – 24 Vac, 20 VA minimum
• wiring
Application-dependent components
:
• carbon dioxide sensors
• damper/damper actuator
• differential pressure switch
• enthalpy switch
• fan status switch
• door switch
• fan section door switch
• relative humidity sensor
• remote occupancy contact
• smoke detector
• temperature sensors
Installing the RTU Open